Related Party Transactions and Net Parent Company Investment - Additional Information (Detail) - USD ($) $ in Millions	4 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014
Schedule of Other Related Party Transactions [Line Items]
Warehousing, selling and administration expenses			$ 6
Adjustment to income tax from spin-off		$ (3)
Maximum [Member]
Schedule of Other Related Party Transactions [Line Items]
Other operating expenses	$ 1